Stop using the "%z" size_t modifier and cast all size_t values to uint64_t. Some platforms don't support this modification.

llvm-svn: 164148
diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
index 8225e69..ddb3181 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
@@ -1215,7 +1215,8 @@
     {
         m_supports_alloc_dealloc_memory = eLazyBoolYes;
         char packet[64];
-        const int packet_len = ::snprintf (packet, sizeof(packet), "_M%zx,%s%s%s", size,
+        const int packet_len = ::snprintf (packet, sizeof(packet), "_M%llx,%s%s%s",
+                                           (uint64_t)size,
                                            permissions & lldb::ePermissionsReadable ? "r" : "",
                                            permissions & lldb::ePermissionsWritable ? "w" : "",
                                            permissions & lldb::ePermissionsExecutable ? "x" : "");